Process of coating objects with subdivided material.



L A I s. w.. A u m 1 N D vhm um D,... Mw Bm im G m u nu c m s s E o o nL., 8 8 9 APRLIUATIO-l FILED FIB. 170,191.1..

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A 'fifa/Mm Patented Mar. 28, 1911.

- UNITED srATEs'- PATENT oEEIoE.

IEANILI F. BRADLEY, 0F CHICAGO, ILLINOIS, ASSIGNQR BRADLEY AND VROQMA'Nl COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

PROCESS OF CQATING OBJECTS WITH SUBDIVIDE'D MATERIAL.

To all whom it may concern:

Be it known that I, FRANKLrN F. BRAD- LEY, citizen of the United States,residing at Chicago, inthe countyF of Cook and StateA of Illinois, haveinvented a certain new and .useful Improvement in Processes of CoatingObjects with Subdivided Material, of which the following is a full,clear, concise, and eX- act description, reference being had to theaccompan ing drawings, forming a part 'of this speci cation.' Y

My invention relates to a process of coating objectsv with subdividedmaterial and has for its purpose the provision of a novelv processwhereby objects possessing variously shaped and disposed surfaces mayquickly` and effectively .be coated with subdivided material.

My invention isof particular lservice in effecting the applicationl ofbronze powder to metal bedstead parts, though the inventionv is not tobe restricted to such use. Hitherto bronze' powder has been applied tometa-l bedstead parts by means of ordinary 4bristle or hair brushes, amethod that required much time and which was not always accompanied bysatisfactory results.

. In practicing my invention I employ mov-v ing air that is laden withthe subdivided material and so locate the object to be coated and so'direct the air that is to convey the material to the'object to becoated that all exposed parts of the object which have previously beencoated-with suitable adhesive material may havethe subdivided material,applied thereto in one'operation 'which may be veryv speedy, and bywhich results equal and superior to the hand method be securedl .As myinvention isA preferably ypracticedl lthe objectyto be coated, whichAhas first had suitable adhesive material such as a thin wet varnishapplied to those partsbthat are to receive the: coating, is placed incoperative relation with a deflecting surface so as to have spaceintervene between the object and said surface, the vair ,laden withthe'snbdivided material being caused to move toward the 'object Iand thedeflecting surface inV a manner to cause the air that strikes thedeiec'ting surface to move toward the object, whereby all exposed partshaving adhesive material thereon are coated with the subdividedmaterial. The detlecting surface 5 constitutes the preferred means forcausing Specification of Letters :Patentl tially caused to move.

Patented Mar. 2s, 1911.

Application led February 1"?, 1911. Serial No. 609,204.

' the air to flow toward the object in a direc* tion opposite to that inwhich the air is ini- Further to insure quickness of results,particularly where the objects cover considerable area, the locality`from which the air is .initially directed upon the obyectsrischanged,vto change the di1 ec tion in which the air is caused to liow.

Reference is made to my co-pending application for United States LettersPatent Serial No. 614,001, filed March 13, 1911,

which, in `some respects, more broadly'relates to a process of coatingobjects-with. subdivided material. I

I will explain my invention more fully in connection with a descriptionof the apparatus'shown in the accompanying drawing and by which theprocess of my invention may readily be practiced, though I do not-limitmyself to the apparatus illustrated.

In the drawing Figure 1 vis an elevation, partly in section, of amachine that may be used; Fig. 2 is a sectional view in the direction ofarrows 2 2 in Fig. 1; Fig. 3 is a sectional view in the direction ofarrows .3 3

in Fig. 1.

Like -)arts are indicated by similarv characters ofrcference throughoutthe different figures.

The receptacle t is shaped suitably to the. objects to be receivedtherein, the construction illustrated being well'adapted to re- I ceivemetal bedstead parts that are moved into and out of the receptacle uponvthe 'Y truck b. through the door-wa ic having' a door c1, the bedsteadpart al bemg illustrated within the receptacle. vA. section c ofsuitable piping leads from the air-exit sideof the receptacle to a powerdriven lfan or blower f,'.the complemental section g of the pipingleading from the blower to the air entrance side of the receptaplelocated opposite the air exit side, thel pipe section g having multipledbranches l1, through which air is admitted to the interior of thereceptacle in a stream or streams. The powder or subdividedunaterial,such as bronze powder, is admitted to the piping, preferably through thefunnel 2'.. The powder is distributed throughout the flowing column ofair in the piping and is conveyed .by the moving air to the multipleddischarge ends Z m ofthe piping air to the structure. Lbe coated arelarge, the direction of the air cession whereby the locality from whichi' the air is initially directed upon the object orv where the air hasfullest flow may bel changed to change the-direction of-'zt'he'aairwhere it Hows most fully. l I alsov desir-ably multiple the air exitopenings and distribute' them' over an area` that preferably exceeds thelargest exposed surface upon thestrucf ture d that is to receive thepowder.' These multipled air exit or discharge openings are desirablyconstituted of perforations p inl the screen plate g preferablyconstituting la wall of the receptacle a. The aggregate area of thesescreen openings is preferably not greater than the area of a right crosssection through the portion of the pipe e that is uniform in diameter,the escaping air passing through all of the openings p in seeking pathsof least resistance. YThe end of the pipe section e adjacent to thescreen Q flares toward said screen and embraces its borders.

In practicing my invention with the apparatus described, the object clthat is to be" -coated with the subdivided material has those exposedsurfaces which areto receive the coating covered with a suitableadhesive -material such as wet varnish.V This object is then placedwithinthe receptacle so as to have spaces or clearance intervene betweenthe receptacle walls and the object, `the obj'ect being located betweenthe pipe ends lm and the receptacle wall g. Air is then forced to movetoward the object d and the receptacle wall g rbefore which the objecthas lbeen placed, this receptacle wall affording a deflecting surfaceagainst which the air strikes after it has passed toward and by thestructure d and which deecting surface returns Where tlie objects to inmoving toward the object4 is modified by the manipulation of the valvesn and 0. Space intervening between the plate 'g and the object to becoated, air is vpermittedv -to be directed around and toward the objectin a general movement (the walls of the receptacle takin part indefining such oreneral movement afforded by the receptacle wall g andother walls of the receptacle cause the air also to move in eddies andminor currents whereby the material with which the air'v is laden isconveyed to exposed partslof the object'that would not be as wellreached otherwise.

While I have used the term air throughout the specification and claims,it is obvious that any inert elastic Huid may be used, and I use theterm air in the claims in this broad sense.

apparatus for coating objects with subdi- The ,deiecting sur aceY videdVmaterial asffollows: Serial No. 543,215, filed February 11, 1910; SerialNo. 550,115, filed March 18, 1910; Serial. No. 569,428,

filed June 29, 1910; Serial No. 588,7 3 0, filed I October 24, 1910;Serial'No. 588,731, led October 24, 1910; Serial No. 603,251, filed.Janiiary'lS, 1911; Serial No. 603,726, filed January 20, 1911; andSerial No. 609,203, filed February 17, 1,911. v

Vhile I have herein specifically described the preferred Way ofpracticing my invention, Ido not wish to be limited thereto nor to theapparatus which I have shown with which to practice the method of myinvention.

Y Having thusL described my invention, I claim as new and desire tosecure-by Letters Patent'the following 1. The process of coating objectswith subdividedmaterial which consists in placing adhesive material uponthe object to be coated;` placing the object in association with adeflecting surface so as vto have space intervene between saidy objectand surface; and causing airladen with the-subdivided material withwhich the object is to be coated to move toward -the, object andthereafter toward the delecting surface in a manner to causematerial-laden air that strikes the deflecting surface to move towardthe object,l whereby exposed parts having adhesive material thereon arecoated with subdivided material.

A 2. The process of coating objects with subdivided material whichconsists in placing adhesive material upon the object to be coated;placing the object in association with a deflecting surface so as tohave space intervene between said objectI and surface; causing airladenwith the subdivided material with which the object is 'to be coated tomove toward the object and thereaftertovward the delecting surface in amanner to cause material-laden air that strikes the defleeting surfaceto move toward the object; and changing the locality from which the airis initially directed upon the object,

whereby exposed parts havin adhesive material thereon are coated withvsubdivided Y material. A v 3. The .process of coating objects withsubdivided `material which consists in placing adhesive material upontheobject to be coated; placing the object in association with a deflectingsurface so as. to have s ace Vintervene between said object and sur ace;

and causin air laden with the subdivided material withawhich the objectis to be coated to move in a stream toward the' object and thereafter'toward the deflecting surface in a manner to cause material-laden airthat strikes the delecting surface to move toward the object, wherebyexposed I have led applications for patents upon parts having adhesivematerial thereon are coated with subdivided material.' l

E. L. WHITE.

L1:.TheV process of coating objects with 7. The process ofv coatingobjects with 45 subdivided material which consists in placsubdividedmaterial which consists in placing adhesive material upon'the object tobe ing adhesive material u on the object to be coated; placing theobject in' association coated; placing the 'object Within a're-cep- 5With a deectingsurface so as to have space tacle so'as to besubstantially clear of the intervene between said object and surface;receptacle walls; causing air laden with the 50 causing air ladenwithJthe subdivided masubdivided material to move'within the reterial`with which the object is to be coated ceptacle toward the objectandreceptacle to move in a stream toward the object and walls; andchanging the locality Where the 1-0 thereafter toward' the deflectingsurface in air has fullest flow, whereby parts of the oba manner tocausev material-laden air that ject that are provided with the adhesivema- 55 strikes the delecting surface to move vtoward te'rial are coatedwith the subdivided mat-he object; and changing the locality fromterial. which the air is initially directed upon the 8. The process ofcoating objects with object, whereby exposed parts having adsubdividedmaterial which consists in plachesive material thereon are coated withsubing adhesive material upon the object to be 60 divided material.coated; causing air laden with the 'subdi 5. The process of coatingobjects with vided material with which the object is to subdividedmaterial which consists in placbe coated to move toward the object tocoat V ing adhesive material upon the object to be portions thereof withsubdivided materials;

coated; placing the object in association andv causing material-ladenair that has 65 with a delecting surface so as to have space passedbythe object to move towardl the obintervene between said objectA andsurface; ject, further to coat the object with subdicausing air ladenwith the subdivided mavided material. y terial with which the object isto be coatedl 9. The process of coating objects with to move in a streamtoward the object and subdivided material which consists in plac- 7Cthereafter toward the deflecting surface in ing adhesive material uponl:the object to be a manner to cause material-laden air that coated;causing air laden with the subdistrikes the deflecting surface to movetoward vided material with which the object is to the object; andchanging the direction in be coated to move toward the object to coatwhich the air stream is caused to flow, whereportions thereof Withsubdivided materials; 75 by exposed parts having adhesive materialvcausing material-laden air that has passed thereon are coatedwithsubdivided material. by the object to' move toward the object, fur-6. .The process of coating objects with ther to coat the object withsubdivided masubdlvided material which consistsl in placterial; andchanging the place Where the air ing adhesivematerial upon the object tobe has fullest flow. A 8O coated; placing the object within a recep- Inwitness whereof, I hereunto subscribe I tacle so as to be substantlallyclear of the remy name this sixteenth day of February cleptaced Walsd;and cailising air laden with A. D., 1911. i 40 tie su ivi e materia tomove within the receptacle toward the object, and receptacle l FRANKLINF BRADLEY' walls whereby parts of the object that are Witnesses:provided with the adhesive material are G. L. CRAGG, coated with theYsubdivided material.

It is hereby certified that in Letters Patent No. 988,243, granted March28, 1911,

upon the application of Franklin F. Bradley, of Chicago, Illinois, foran improvement in Processes of Coating Objects with Subdivided Material,errors appear in the printed 'Lgaecification requiring correction asfollows: Page 3, line l4l, after the word me' comma should be strickenout; same page, line 42, after the word wallsi'cotnmashould be inserted;same page, lines 64 and 75, the word materials should read material;and` that the said Letters Patent should be read with these corirections therein 'that the same may conform to the record of the case inthe Patent office. i i f Signed and 'sealed-this day of pril, A. D.,y1911.

i A ,0. o. B1LLING-s,

Acting Commissioner of Patente.

[sEALr] Correetienls in Letters Patenty No. 988,243.

coated with the Ysubdivided material.

E. L. WHITE.

4.The process of coating objects with 7. The process ofv coating objectswith 45 subdivided material which consists in placsubdivided materialwhich consists in placing adhesive material upon'the object to be ingadhesive material u on the object to be coated; placing the object in'association coated; placing the 'object within a'recep- With adeectingsurface so as to have space tacle so'as to be substantiallyclear of the intervene between said object and surface; receptaclewalls; causing air laden with the 50 causing air laden withJthesubdivided masubdivided material to move'within the reterial` with whichthe object is to be coated ceptacle toward the object andreceptacle tomove in a stream toward the object and walls; and changing the localityWhere the 1-0 thereafter toward' the deflecting surface in air hasfullest flow, whereby parts of the oba manner to causev material-ladenair that ject that are provided with the adhesive ma- 55 strikes thedelecting surface to move vtoward terial are coated with the subdividedmathe object; and changing the localit-y from terial. which the air isinitially directed upon the 8. The process of coating objects withobject, whereby exposed parts having adsubdivided material whichconsists in placliesive material thereon are coated with subing adhesivematerial upon the object to be 60 divided material. coated; causing airladen with the subdi 5. The process of coating objects with videdmaterial with which the object is to subdivided material which consistsin placbe coated to move toward the object to coat V ing adhesivematerial upon the object to be portions thereof with subdividedmaterials;

coated; placing the object in association andv causing material-ladenair that has 65 with a delecting surf-ace so as to have space passedbythe object to move towardl the obintervene between said objectA andsurface; ject, further to coat the object with subdicausing air ladenwith the subdivided mavided material. y terial with which the object isto be coatedl 9. The process of coating objects with to move in a streamtoward the object and subdivided material which consists in plac- 7Cthereafter toward the deflecting surface in ing adhesive material uponl:the object to be a manner to cause material-laden air that coated;causing air laden with the subdistrikes the deflecting surface to movetoward vided material with which the object is to the object; andchanging the direction in be coated to move toward the object to coatwhich the air stream is caused to How, whereportions thereof withsubdivided materials; 75 by exposed parts having adhesive materialvcausing material-laden air that has passed thereon are coatedwithsubdivided material. by the object to' move toward the object, fur-6. .The process of coating objects with ther to coat the object withsubdivided masubdlvided material which consistsl in placterial; andchanging the place Where the air ing adhesivematerial upon the object tobe has fullest flow. A 8O coated; placing the object within a recep- Inwitness whereof, I hereunto subscribe I tacle so as to be substantlallyclear of the remy name this sixteenth day of February cleptaced walsd;and cailising air laden with A. D., 1911. i 40 tie su ivi e materia tomove within the receptacle toward the object, and receptacle i FRANKLINF BRADLEY' walls whereby parts of the object that are Witnesses:provided with the adhesive material are G. L. CRAGG,

It is hereby certified that in Letters Patent No. 988,243, granted March28, 1911,

upon the application of Franklin F. Bradley, of Chicago, Illinois, foran improvement in Processes of Coating Objects with Subdivided Material,errors appear in the printed 'Lgaecification requiring correction asfollows: Page 3, line l4l, after the word me' comma should be strickenout; same page, line 42, after the word walisacommashould be inserted;same page, lines 64 and 75, the word materials should read material;and` that the said Letters Patent should be read with these corirections therein 'that the same may conform to the record of the case inthe Patent office. i i f Signed and 'sealed-this day of pril, A. D.,y1911.

i A ,0. o. B1LLING-s,

Acting Commissioner of Patents.

[sEALi] Correctignls in Letters Patenty No. 988,243.

Corrections in Letters Patent No. 988,243.

l upon the application of Franklin 1". Bradley, of Chicago, Illinois, iin Processes of Coating Objects with Subdivided Material,"

It is hereby certified that in Letters Patent No. 988,243, granted March28` 1911,

foran improvement errore appear in the printed .@eciication requiringcorrection as follows: Page 3, line 41. after the word objee -Lne commashould be stricken out; same page, line +2, after the word walls acommashould be inserted; same page, lines 64 and 75,1;he word materiah shouldread materz'al; and that the said Letters Patent rections therein thatthe same may conform to the record of the case in the Patent Oce.

Signed and sealed this 25th day of April, A. D., 1911.

should he read with these co1'- C. C. BILLINGS,

Acting Comrmlesz'oner of Paten is.

[SEAL]

